package com.atguigu.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;
import sun.security.x509.SerialNumber;

import java.io.Serializable;
import java.util.concurrent.TimeUnit;

/**
 * @author xiaolong
 * @version 1.0
 * @description: TODO
 * @date 2021/9/12 20:18
 */
@Service
public class PaymentService {
    /**
     * @param
     * @return
     * @description: 正常访问 肯定ok
     */
    public String pamentInfo_ok(Integer id) {
        return "线程池：" + Thread.currentThread().getName() + "pamentInfo_ok: " + id;
    }

    /**
     * @param
     * @return
     * @description: TODO 延迟3s
     */
    //服务降级，HystrixProperty条件（大于超时3s）满足则进入fallbackMethod这个方法，进行服务降级调用
    @HystrixCommand(fallbackMethod = "pamentInfo_TimeOutHandler", commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "5000")
    })
    public String pamentInfo_TimeOut(Integer id) {
        int timeNumber = 3;
//        int age =10/0;
        try {
            TimeUnit.SECONDS.sleep(timeNumber);

        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return "线程池：" + Thread.currentThread().getName() + "pamentInfo_ok: " + id + "耗时(秒)" + timeNumber;
    }


    public String pamentInfo_TimeOutHandler(Integer id) {
        return "线程池：" + Thread.currentThread().getName() + "pamentInfo_TimeOutHandler: " + id + "耗时(秒)  8001系统繁忙或者运行报错，请稍后再试";
    }


    //======服务熔断

    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback", commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled", value = "true"), //是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold", value = "10"),//请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds", value = "10000"),//时间窗口期
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage", value = "60"),//失败率达到多少后跳闸
    })
    public String paymentCircuitBreaker(@PathVariable("id") Integer id) {
        if (id < 0) {
            throw new RuntimeException("******id 不能负数");
        }
        String SerialNumber = IdUtil.simpleUUID();
        return Thread.currentThread().getName() + "\t" + "调用成功，流水号：" + SerialNumber;
    }

    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id) {
        return "id 不能负数，请稍后再试， id：" + id;
    }


}
